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#include "chat.h"
#include <QtGui/QApplication>
#include <QtGui/QMessageBox>

#include "chat_adaptor.h"
#include "chat_interface.h"

ChatMainWindow::ChatMainWindow()
	: m_nickname(QLatin1String("nickname"))
{
	setupUi(this);
	sendButton->setEnabled(false);

	connect(messageLineEdit, SIGNAL(textChanged(QString)),
			this, SLOT(textChangedSlot(QString)));
	connect(sendButton, SIGNAL(clicked(bool)), this, SLOT(sendClickedSlot()));
	connect(actionChangeNickname, SIGNAL(triggered(bool)), this, SLOT(changeNickname()));
	connect(actionAboutQt, SIGNAL(triggered(bool)), this, SLOT(aboutQt()));
	connect(qApp, SIGNAL(lastWindowClosed()), this, SLOT(exiting()));

	// add our D-Bus interface and connect to D-Bus
	new ChatAdaptor(this);
	QDBusConnection::sessionBus().registerObject("/", this);

	com::trolltech::chat *iface;
	iface = new com::trolltech::chat(QString(), QString(), QDBusConnection::sessionBus(), this);
	//connect(iface, SIGNAL(message(QString,QString)), this, SLOT(messageSlot(QString,QString)));
	QDBusConnection::sessionBus().connect(QString(), QString(), "com.trolltech.chat", "message", this, SLOT(messageSlot(QString,QString)));
	connect(iface, SIGNAL(action(QString,QString)), this, SLOT(actionSlot(QString,QString)));

	NicknameDialog dialog;
	dialog.cancelButton->setVisible(false);
	dialog.exec();
	m_nickname = dialog.nickname->text().trimmed();
	emit action(m_nickname, QLatin1String("joins the chat"));
}

ChatMainWindow::~ChatMainWindow()
{
}

void ChatMainWindow::rebuildHistory()
{
	QString history = m_messages.join( QLatin1String("\n" ) );
	chatHistory->setPlainText(history);
}

void ChatMainWindow::messageSlot(const QString &nickname, const QString &text)
{
	QString msg( QLatin1String("<%1> %2") );
	msg = msg.arg(nickname, text);
	m_messages.append(msg);

	if (m_messages.count() > 100)
		m_messages.removeFirst();
	rebuildHistory();
}

void ChatMainWindow::actionSlot(const QString &nickname, const QString &text)
{
	QString msg( QLatin1String("* %1 %2") );
	msg = msg.arg(nickname, text);
	m_messages.append(msg);

	if (m_messages.count() > 100)
		m_messages.removeFirst();
	rebuildHistory();
}

void ChatMainWindow::textChangedSlot(const QString &newText)
{
	sendButton->setEnabled(!newText.isEmpty());
}

void ChatMainWindow::sendClickedSlot()
{
	//emit message(m_nickname, messageLineEdit->text());
	QDBusMessage msg = QDBusMessage::createSignal("/", "com.trolltech.chat", "message");
	msg << m_nickname << messageLineEdit->text();
	QDBusConnection::sessionBus().send(msg);
	messageLineEdit->setText(QString());
}

void ChatMainWindow::changeNickname()
{
	NicknameDialog dialog(this);
	if (dialog.exec() == QDialog::Accepted) {
		QString old = m_nickname;
		m_nickname = dialog.nickname->text().trimmed();
		emit action(old, QString("is now known as %1").arg(m_nickname));
	}
}

void ChatMainWindow::aboutQt()
{
	QMessageBox::aboutQt(this);
}

void ChatMainWindow::exiting()
{
	emit action(m_nickname, QLatin1String("leaves the chat"));
}

NicknameDialog::NicknameDialog(QWidget *parent)
	: QDialog(parent)
{
	setupUi(this);
}

int main(int argc, char **argv)
{
	QApplication app(argc, argv);

	if (!QDBusConnection::sessionBus().isConnected()) {
		qWarning("Cannot connect to the D-Bus session bus.\n"
				 "Please check your system settings and try again.\n");
		return 1;
	}

	ChatMainWindow chat;
	chat.show();
	return app.exec();
}
